Instrument sterilizer



. 1 647,070 Oct. 25, 1927. AMANN INSTRUMENT STERILI ZER Filed Jan, 192-6,

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d, e It S [III 4912302? yam The apparatus consists of a for the generation of steam,

l -atented Oct. 25, 1927.

UNITED STATES PATENT OFFICE. c

ADOLF AMANN, OF SCI-IOMBERG, NEAR W'ILDBACH, GERMANY.

Application filed January INSTRUMENT STERILIZER.

sterilizing chirurgic of steam, and especially for tists instruments al instruments by means sterilizing deninjection syringes. portable vessel said vessel havand ing a handle and feet, and a removable lid fitted with an inlet the conical top end of a tube fixed on and a safety valve.

the

lid an insertion tube is pressed by the action of a spiral spring,

off from said insertion tube.

branch tubes branching One of these branch tubes is horizontal and has a conical end, the other branch tube-being curved in upward direction and carrying a cylinder open at its upper end.

An embodiment of the invention is shown,

by way of exampl e, in the accompanying drawing, in the only figure of which the sterilizing apparatus is shown in longitudlnal section.

On a cylindrical vessel 0, having a handle a and mounted on This lid (Z has a tubular inlet (Z containing a safety valve, and

the centre.

which has two upw feet 6, a lid (Z is placed.

a tubular extension 6 at On this tubular extension 6 a In a flange on 7" a red 7b is guided ardly and outwardly extending arms p designed to grip over the handle of the instrument'to be for instance the casing Q of an syringe. A spiral said rod downwards.

tube f a horizontal free end Z of which is conical.

branching off from serves for shutting above said horizontal upper end of tube sterilized, as in ection spring 9 wound around 71. serves topull the gripping arms From the lower portion of tube is is branched the A tube m tube 7 above said horiupward and carries A cock n off the portion of tube 7 branch tube is. Onthe f a sleeve 0 is mounted which is designed to support the instrument to be sterilized. horizontal tube Z:

The conical end Z of the 1s deslgned to receive for instance an injection needle 1". The opening in the rounded end Z of tube 70 is large enough to accommodate the fixing screw .9 of

an injection needle prevent steam pens with sufficient play to trating into the syringe 2, 1926, Serial No. 78,980, and in Germany August 24, 1925.

t. The branch tube 70 is horizontal so that no liquid contained in the cylinder of the syringe t can drop out of the needle 1. The cylinder 10 on the curved tube m is designed to receive the piston '0 of a syringe. Other instruments to be sterilized are placed into a box which has a hole fitting on the rounded end Z of the horizontal tube 70 but is not shown in the drawing.

The improved apparatus can be used for rapidly sterilizing the needle of an injection. syringe during an operation and also for sterilizing the other parts of a syringe or other instruments as superheated steam has a much better sterilizing effect than any other means for instance than alcohol into which the articles to be sterilized are dipped. The cock permits of shutting off the upper portion of tube and the elements mounted on the same, or of throttling the steam according to request.

The vessel 0 can be heated in any conven- 'ient manner for instance by gas.

I claim An apparatus for sterilizing chirurgical instruments, specially dentists instruments and injection syringes, bymeans of steam comprising in combination with a steam generating boiler, a steam outlet in the top end of said vessel, a vertical steam tube, a horizontal branch at the lower end of said vertical steam tube and having an opening in its end to hold the point of a syringe, a valve cockin said horizontal branch tube, a valve cock in said vertical steam tube above said horizontal branch tube, an upwardly directed curved tube branching from said steam tube above said valve cock, an open cylinder on the open end of said curved branch tube and designed to hold an element to belsterilized, a spring-controlled vertical rod shiftably mounted on the outer side of the upper portion of said vertical steam tube, two gripper arms extending from said shiftable rod for gripping over the handle of an instrument to be sterilized to pull the same onto the open top end of said vertical steam tube.

In testimony whereof I aiiix my signature.

ADOLF AMANN. 

